def sayHi():
    print("Hi");


def max(a, b):
    if a > b:
        return a;
    if a < b:
        return b;
    else:
        return 0;


if __name__ == '__main__':
    sayHi();
    print(max(1, 23))
    print("_main_")
else:
    print("not _main_")
